/*
 * Copyright 2009 Jamie Gennis
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.code.gwt.remoteaction.rebind;

import com.google.gwt.core.ext.Generator;
import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;

/**
 * A generator class for generating the entire proxy implementation for classes
 * implementing the RemoteActionService interface.
 *
 * @author jgennis
 */
public class RemoteActionServiceProxyGenerator extends Generator {

  @Override
  public String generate(TreeLogger logger, GeneratorContext context, String typeName)
      throws UnableToCompleteException {
    TypeOracle typeOracle = context.getTypeOracle();

    JClassType remoteActionService = typeOracle.findType(typeName);
    if (remoteActionService == null) {
      logger.log(TreeLogger.ERROR, "Unable to find metadata for type '" + typeName + "'", null);
      throw new UnableToCompleteException();
    }

    RemoteActionServiceValidator validator = new RemoteActionServiceValidator(context,
        remoteActionService);
    RemoteActionProxyCreator creator = new RemoteActionProxyCreator(remoteActionService);

    TreeLogger proxyLogger = logger.branch(TreeLogger.DEBUG, "Generating client proxy for " +
        "remote action service interface '" + remoteActionService.getQualifiedSourceName() + "'",
        null);

    validator.validate(proxyLogger);
    return creator.create(proxyLogger, context);
  }
}
